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# Newton's First Law

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Newton's First Law

The First Law is about inertia; objects at rest stay at rest unless acted upon and objects in motion continue that motion in a straight line unless acted upon.

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• Simulation

## First Law Simulation

Move a sled on ice as directed by telling an eskimo to push, pull, or apply no force at all.

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• Video

## Professor Mac Explains Newton's First Law of Motion

Explains Newton's first law and demonstrates the law with an experiment.

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• Practice
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## Newton's First Law Quiz - PPB

Covers the concept that an object in motion will stay motion and an object at rest will stay at rest unless a net force acts on it.

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• Critical Thinking

## Newton's First Law Discussion Questions

A list of student-submitted discussion questions for Newton's First Law.

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• Study Guide